When, however, summer was at its height, some of the legions were sent back overland into winter-quarters, but most of them Cæsar put on board the fleet and brought down the river Amisia to the ocean. At first the calm waters merely sounded with the oars of a thousand vessels or were ruffled by the sailing ships. Soon, a hailstorm bursting from a black mass of clouds, while the waves rolled hither and thither under tempestuous gales from every quarter, rendered clear sight impossible, and the steering difficult, while our soldiers, terrorstricken and without any experience of disasters on the sea, by embarrassing the sailors or giving them clumsy aid, neutralized the services of the skilled crews. After a while, wind and wave shifted wholly to the south, and from the hilly lands and deep rivers of Germany came, with a huge line of rolling clouds, a strong blast, all the more frightful from the frozen north which was so near to them, and instantly caught and drove the ships hither and thither into the open ocean, or on islands with steep cliffs or which hidden shoals made perilous. These they just escaped, with difficulty, and when the tide changed and bore them the same way as the wind, they could not hold to their anchors or bale out the water which rushed in upon them. Horses, beasts of burden, baggage, were thrown overboard, in order to lighten the hulls which leaked copiously through their sides, while the waves too dashed over them.